In this monthly recurring column we would like to put a transmission or related product into the spotlight, our GearTopper. In this way, we like to share our product knowledge with our readers. In this edition, we focus on Planetary Slewing drives.
Planetary slewing drives are normally recognized by a pinion on the output shaft and often a long output support. The pinion, which can be integrated with the output shaft or separately mounted on the output shaft, is running into the gears of a slewing bearing. The slewing bearing is a big bearing with internal or external gears which is placed between the bottom and top part of a crane or similar system to create the rotating movement.
As written before you can often also recognize a slewing gearbox by its long output support. The distance between the biggest planetary stage and the pinion is mostly longer then for a standard planetary gearbox. The output support has some strong bearings with a certain distance between them, to be able to resist the high radial load coming from the pinion. The output supports for planetary slewing gearboxes are seen with single or double spigot, depending on the radial load and structure of the crane.
Aandrijf Technisch Buro supplies a wide range of planetary slewing gearboxes produced by Dinamic Oil in Italy. We have many different output supports as a standard and we are also able to customize them to customer needs. We have many standard pinions but we also manufacture customer or application specific pinions. With a standard range of slewing drives up to 460.000Nm, available in inline or right-angle version, with or without brake, for hydraulic or electric motor, we are able to fulfill almost all requests on slewing gearboxes.
The gearboxes are optionally available with 3.1 material certificates and a product certificate from the well-known certifying bodies for the offshore and maritime sector, by means of type approval or design appraisal. Due to the modular construction of these gearboxes combined with our local stock, Aandrijf Technisch Buro is able to deliver a fair part of the range quickly. We are happy to provide you with professional advice, to make sure the gearbox fits seamlessly with your application.